It's time to renew your memberhsip, and you can't find the email about it.  That's okay; just log in to your account and go to your profile.  There, you can click the Renew button.

Here's a screenshot to demonstrate.  Key points highlighted by red arrows:
1. You must be logged in.  That means your name appears at the top of the screen.  Click on your name to take you to your profile.

2. Be sure you are looking at your Profile, not your Privacy Settings, Email Subscriptions, or other sections.

3. Click on the Renew button in the Membership Details section.